It's an example of woodcut printing, a common illustrative technique before the era of modern printing presses and photographic or digital reproduction. The style is called Baroque.

At least, that's my immediate reaction. Looks like a wood cut. The figures leads me to believe this is an example of wood relief printing from a couple hundred years back or longer. I'll say 1700's. This is likely a reproduction of a woodcut print. Dover Publishing reproduces a great many examples of early illustration in soft cover books, books which were enormously popular when computer graphics were still in their infancy.

Dropped capital letters were often ornate inside and out, as is this one.